"Michael Guyver" <kenevel(at)googlemail(dot)com> writes:
> are the bytes representing an int4 Oid simply 23, represented in variable buf as
> [0x17][0x00][0x00][0x00]
No, in the buffer they'll be in network (big-endian) byte order,
[0x00][0x00][0x00][0x17]
If you are running in a little-endian architecture (eg Intel) then at
some point you'll be wanting to reverse the byte order to make a native
integer. In C you'd use ntohl() to do this. I'm not sure what's the
appropriate thing in Java --- I was under the impression that Java tried
to hide hardware details like endianness, so there may be some
convention about how you turn a sequence of bytes into a native integer.
regards, tom lane